Sr. Scientist, Radiopharmaceutical Development

At RayzeBio, every day is an opportunity to ignite meaningful change. As a wholly‑owned subsidiary of Bristol Myers Squibb, RayzeBio blends the nimble, pioneering spirit of an emerging biotech with the global expertise and resources of a leading innovator in oncology. Our mission is to develop transformative radiopharmaceutical therapies that offer new hope for patients living with cancer. Here, you’ll join a multidisciplinary team where your ideas are valued, your expertise is amplified, and collaboration is at the heart of everything we do. From day one, expect to make an immediate impact—on our science, on our teams, and most importantly, on patients. Learn more about RayzeBio: Summary RayzeBio, a Bristol Myers Squibb company, is a dynamic biotechnology company headquartered in San Diego, CA. The company focuses on improving survival of people with cancer by harnessing the power of targeted radioisotopes. It is developing innovative drugs against solid‑tumor targets and aims to be the global leader in radiopharmaceuticals. The Sr. Scientist, Radiopharmaceutical Development is a leading contributor in the design, development, and advancement of RayzeBio’s radiopharmaceutical programs. This senior role is responsible for translating cutting‑edge scientific discoveries into robust clinical drug products, driving technology transfers, overseeing IND‑enabling activities, and playing a pivotal role in clinical manufacturing. The position demands expertise in radiochemical synthesis, analytical techniques, and radiopharmaceutical formulation, as well as a proven ability to manage complex projects and mentor junior staff. Job Responsibilities Drive CMC process development and optimization for clinical drug products, including formulation lock and robust process definition, ensuring scalability and compliance with regulatory standards. Lead the transfer of advanced radiopharmaceutical processes and technologies to internal and external manufacturing sites, including the Indianapolis facility and CDMO partners. Oversee the development, operation, and maintenance of radiochemistry laboratory infrastructure, ensuring readiness for translational activities from preclinical through clinical phases. Foster collaborative relationships with discovery scientists, external academic partners, and CDMOs to address complex scientific questions and pursue joint research efforts. Independently design and execute advanced radiochemistry and radiolabeling experiments, with a special focus on novel radioisotope and chelator development to enable new classes of radiopharmaceuticals. Serve as a subject‑matter expert in radiopharmaceutical production processes, quality control, and advanced analytical methodologies, providing scientific leadership across multidisciplinary teams. Ensure strict adherence to radiation safety protocols, federal and state regulations, and internal guidelines for handling radioactive materials; promote a culture of safety‑first and regulatory compliance. Interpret complex experimental data, draw scientifically rigorous conclusions, and communicate findings in technical reports, regulatory documentation, and presentations for internal and external stakeholders. Manage and prioritize research projects, oversee third‑party vendors, and mentor junior scientists and associates. Draft and review CMC sections for regulatory submissions, SOPs, and comprehensive development reports. Travel less than 10% of the time, including external research sites and manufacturing facilities. Education & Experience BSc + 8, MSc + 6 years or PhD + 3 years in Chemistry, Radiochemistry, Pharmaceutical Sciences, or related field with relevant industry experience, including significant CMC work with radiopharmaceutical products. Experience in radiopharmaceutical companies leading technology transfers to internal manufacturing or external CDMO partners for Phase 1 clinical programs strongly preferred. Demonstrated expertise in radiochemical synthesis, purification, formulation, and analytical techniques. Proven track record of innovation in radiopharmaceutical development. Deep familiarity with federal and state regulatory requirements and safety protocols for radioactive materials. Skills and Qualifications Advanced experience developing stable radiopharmaceutical formulations with targeted attributes such as extended shelf‑life, radiochemical purity, and enhanced biodistribution. Hands‑on expertise with commercial and custom radiopharmaceutical manufacturing and analytical equipment systems, including automation platforms, radioHPLC, radioTLC, gamma counters, dose calibrators, hot cell manipulators, and advanced gamma spectroscopy. Extensive experience with a broad spectrum of radioactive materials for both diagnostic and therapeutic applications. Strong professional ethics, integrity, and ability to maintain confidential information. Outstanding written and verbal communication skills, with the ability to influence and communicate effectively across all levels, including executive leadership. Proactive, innovative thinker who thrives in a fast‑paced, multi‑disciplinary industrial environment. Demonstrated ability to manage complex research projects and mentor junior staff. Physical Demands While performing duties, the employee is regularly required to sit, reach with hands and arms, and talk or hear. Occasional lifting and/or moving up to 30 pounds may be required. Specific vision abilities include close and distance vision. Lab work requires use of protective clothing, gloves, and safety glasses. Compensation Overview San Diego – RayzeBio – CA: $131,028 – $158,775. The starting compensation range for this role is listed above for a full‑time employee (FTE) basis. Additional incentive cash and stock opportunities (based on eligibility) may be available. The starting pay rate takes into account characteristics of the job, such as required skills, where the job is performed, the employee’s work schedule, job‑related knowledge, and experience. Final, individual compensation will be decided based on demonstrated experience. Benefits Offerings Health coverage: medical, pharmacy, dental, and vision care. Well‑being support: programs such as BMS Well‑Being Account, BMS Living Life Better, and Employee Assistance Programs (EAP). Financial well‑being and protection: 401(k) plan, short‑ and long‑term disability, life insurance, accident insurance, supplemental health insurance, business travel protection, personal liability protection, identity theft benefit, legal support, and survivor support. Work‑Life Benefits US exempt employees: flexible time off (unlimited, with manager approval), 11 paid national holidays (not applicable to employees in Phoenix, AZ, Puerto Rico or RayzeBio employees). Phoenix, AZ, Puerto Rico and RayzeBio exempt, non‑exempt, hourly employees: 160 hours annual paid vacation for new hires with manager approval, 11 national holidays, and 3 optional holidays. Supporting People With Disabilities BMS and RayzeBio are dedicated to ensuring that people with disabilities can excel through a transparent recruitment process, reasonable workplace accommodations/adjustments and ongoing support in their roles. Applicants can request a reasonable workplace accommodation/adjustment prior to accepting a job offer. If you require reasonable accommodations/adjustments in completing this application, or in any part of the recruitment process, direct your inquiries to View email address on click.appcast.io. Visit careers.bms.com/eeo-accessibility to access our complete Equal Employment Opportunity statement. Candidate Rights BMS and RayzeBio will consider for employment qualified applicants with arrest and conviction records, pursuant to applicable laws in your area. If you live in or expect to work from Los Angeles County if hired for this position, please visit this page for important additional information: Data Protection We will never request payments, financial information, or social security numbers during our application or recruitment process. Learn more about protecting yourself at Any data processed in connection with role applications will be treated in accordance with applicable data privacy policies and regulations. #J-18808-Ljbffr Bristol Myers Squibb EU Policy